Kugadzirwa kwePCB yeAD300

Rogers AD300 PCB ibhodhi redunhu rakadhindwa rakavakirwa paRogers Corporation's AD300-series laminate — substrate yePTFE yakazadzwa neceramic, yakagadzirwa negirazi-yakasimbiswa yakagadzirirwa kushandiswa kweantenna uko passive intermodulation (PIM) performance uye low insertion loss ndizvo zvinodiwa pakugadzira. Shanduro yekugadzirwa pari zvino iAD300D, iyo yakatsiva zvakanyanya AD300C yekare mumapurogiramu mazhinji eantenna ekutengeserana.

Zvinhu izvi zviri mukati meRogers' AD Series — mhuri yema laminates emhando ye antenna anotangira pa 2.50 (AD250C) kusvika pa 3.50 (AD350A), zvichibvumira mainjiniya ema antenna kusarudza substrate Dk inogadzirisa nzvimbo ye element, saizi ye feed network, uye beamwidth yekushanda kwavo uye form factor.

1) Chii chinonzi Rogers AD300 PCB Material

Rogers AD300 ipurasitiki yakagadzirwa nePTFE inoshandisa ceramic filler yekudzora dielectric constant uye girazi rakarukwa kuti rive rakagadzikana. Kusiyana ne hydrocarbon-ceramic laminates (yakadai seRO4000 series), AD300 inoshandisa fluoropolymer resin system, iyo inoita kuti ive nehunhu hwakasiyana hwekugadzirisa - inoda plasma desmear kana sodium etch kuburikidza ne metallization pane standard alkaline desmear.

Zvinhu izvi zvakagadzirwa zvichienderana nezvinhu zvitatu zvinokosha pakushanda: MDK inodzorwa kuti ionekwe kuti antenna inokwanisa kushanda zvakanaka, kurasikirwa kwakaderera kuti antenna ishande zvakanaka, uye kudzvinyirirwa kweintermodulation yezvivakwa zvekutakura zvinhu zvakawanda. Tsanangudzo yekupedzisira yezvinhu izvi inofanira kuiswa muAD300 supplier uye kuongororwa kwemitengo kuitira kuti kuwanikwa uye chiyero chekuongorora zvisimbiswe usati waraira.

Kune mainjiniya vanoshanda pakugadzira maPCB ane frequency yakakwira , AD300 ine nzvimbo yayo chaiyo: haisi iyo Rogers ine kurasikirwa kwakaderera iripo, asi inopa musanganiswa wekudzvinyirira PIM, kugadzikana kwezvikamu, uye kugona kwePTFE kunodiwa nekushandiswa kwezvivakwa zveantenna.

2) AD300 Series: AD300C, AD300D, uye AD300A Tsananguro

Chigadzirwa cheAD300 chinosanganisira mhando nhatu dzakasiyana dzezvigadzirwa:

AD300C ndiyo yaive mhando yekutanga yekugadzira. Yakasimbisa chinangwa cheDk cheseries pedyo ne3.00 uye PTFE/ceramic/glass construction iyo inotsanangura mhuri yeAD300.

AD300D ndiyo chiyero chekugadzirwa chazvino uye ndiyo mhando yakatarwa mumagadzirirwo matsva mazhinji. Kuvandudzwa kukuru pamusoro peAD300C kunosanganisira kushivirira kwakagadziridzwa kwe dielectric constant tolerance uye mhinduro yakagadziridzwa yePIM. Kana mainjiniya nevagadziri vachitaura nezve "Rogers AD300 PCB" mumapurogiramu anoshanda, zvinoreva AD300D zvakanyanya.

AD300A igadziriso yechizvarwa chechipiri inosiyana neAD300C mu dissipation factor (Df), coefficient of thermal expansion (CTE), uye temperature coefficient of dielectric constant (TCDk). AD300A yakaunza kuvandudzwa kwemaitiro kwakaderedza kusiyana kwenzvimbo dzekugadzira.

Kune chero dhizaini itsva, taura AD300D. Kune mapurogiramu ekare ari paAD300C kana AD300A, simbisa nemugadziri wako kana akasiyana acho achigona kuchinjwa kune zvinangwa zvako zve impedance usati waisa panzvimbo.

3) Hunhu Hunokosha hweMagetsi neMakanika

Zvose zviri pazasi ndezveAD300D, iyo iri kugadzirwa pari zvino, inoyerwa nenzira dzeIPC-TM-650 pa10 GHz uye 23°C kunze kwekunge zvataurwa.

Zvinhu zvitatu zvinotsanangura nzvimbo yeAD300D pakati pezvinhu zvine frequency yakakwira . Dhiki ye2.94 inodzorwa zvakanaka kusvika pa ±0.05 tolerance, zvichiita kuti impedance inofungidzirwa munzvimbo dzekugadzira. Dhiki ye0.0021 yakaderera zvakakwana kuti igadzire magadzirirwo eantenna anoshanda zvakanyanya asi kwete seanopisa sezvinhu zvakaita seRT/duroid 5880 (Df 0.0009). Z-axis CTE ye98 ppm/°C imhando yezvinhu zvakagadzirwa nePTFE uye inofanira kuverengerwa kuburikidza nekuverenga kwakavimbika pamagadzirirwo e multilayer.

4) Kushanda kwePIM: Nei Ichitsanangura Mashandisirwo eAD300

Passive intermodulation (PIM) chiitiko chisiri chemutsara muzvikamu zvisingashande zvinogadzira masaini ekupindirana pamafambiro epakati pemodulation. Mumaantenna enzvimbo dzakawanda dzinotakura maateri maviri kana anopfuura, zvigadzirwa zvePIM zvinogona kuwira zvakananga pamafrequency ekugamuchira, kuderedza kunzwisisika kwesystem uye chiyero checarrier-to-interference.

Rogers AD300D inowana PIM levels yakaderera kusvika -165 dBc payakaedzwa uchishandisa nzira yemukati yaRogers pa 0.030″ thick substrates ne S1 reverse-treated copper foil. Iyi nhamba haisi vimbiso yehunhu — mashandiro ePIM anokanganiswa zvakanyanya nerudzi rwe copper foil, surface treatment, uye circuit geometry — asi inosimbisa kugona kwechinhu ichi kugadzira antenna yebase station.

Sarudzo yefoiri yemhangura ndiyo inonyanya kukosha PIM variable. AD300D inowanikwa nesarudzo nhatu dzefoiri:

• Mhangura yeED (yakaiswa electrodeposited): Chinangwa chakajairika; chakakwana kune zvinodiwa zvePIM zvine mwero
• Mhangura yeED yakagadziriswa nereverse (S1 foil): Inokurudzirwa kumashandisirwo eantenna uko PIM iri hunyanzvi hwekushanda; inopa kukosha kwe -165 dBc
• IM Series copper foil: Sarudzo yakasimba yekukwesha mapeel ekushandisa ane zvinodiwa zvemakanika zvinoda simba rakawanda

Kune chero dhizaini yeantenna ine PIM specification yakaburitswa, taura zvakajeka reverse-treated (S1) copper foil. Kusashandisa standard ED copper usinganzwisise PIM idambudziko rinowanzoitika rinokanganisa mashandiro esystem akayerwa.

5) Kunoshandiswa PCB yeRogers AD300

AD300D inokodzera kushandiswa kweantenna munharembozha uye muma frequency ebhizinesi. Mashandisirwo akanyorwa anosanganisira:

• Manetwork ekufambisa antenna echiteshi chepasi: Network yekudyisa inogovera simba kubva kutransceiver kuenda kuzvinhu zveantenna. Kushanda kwePIM munetwork yekudyisa kunokanganisa zvakananga pasi pekupindira kwesystem yese yeantenna.
• Masisitimu eantenna akaparadzirwa (DAS): Masisitimu ekufukidza mukati umo ma antenna nodes akawanda anogovana chiratidzo kubva kunzvimbo imwe chete. Kurasikirwa kushoma kwekupinza uye kugadzikana kwePIM zvakakosha pabhajeti rekubatanidza sisitimu.
• Maantenna enhare dzekutengeserana: Maantenna echikamu che4G LTE ne5G sub-6 GHz infrastructure apo mitemo yePIM inoshanda.
• Ma antenna eGNSS, GPS, uye SDAR: Nzvimbo chaiyo uye redhiyo yesatellite inogamuchira maantenna uko kugadzikana kwe substrate Drk kunosarudza kugadzikana kwechikamu chepakati.
• Maantenna eDigital Audio Broadcasting (DAB): VHF/UHF bhendi rekuparadzira rinotambira antenna.

AD300D haiwanzo kutaurwa nezvemashandisirwo ema millimeter-wave ari pamusoro pe40 GHz, uko zvinhu zvakaita seRT/duroid 5880 ine Df yakaderera zvinopa mukana wekurasikirwa nekuisa. Hazvina kukodzerawo magadzirirwo ane simba guru apo thermal conductivity ndiyo inonyanya kukosha - kushandiswa ikoko kunofukidzwa nesarudzo dze higher-Dk laminate muAD Series, kunyanya AD350A.

6) Kuenzaniswa kweAD300 nezvimwe zvinhu zveRogers AD Series

Mukati meAD Series, AD300D naRogers RO3035 (Dk 3.50, kubva muRO3000 series) vanotarisa mhando dzakafanana dzeDk asi kubva mumaonero akasiyana ekuvaka. AD300D yakagadzirirwa PIM; RO3035 yakagadzirirwa kugadzirisa dielectric yakagadzikana muma microwave circuits akafara. Hapana imwe inotsiva imwe — sarudzo chaiyo inoenderana nekuti PIM depression kana kuti microwave performance yakafara ndiyo inodiwa zvakanyanya.

Isola I-Tera MT40 inzira isiri yePTFE yevagadziri vanoda mashandiro asina kurasikirwa zvakanyanya asi vanoda kugadziriswa kunoenderana neFR4. Haipe hunhu hwePIM hweAD300D asi inobvisa zvinodiwa zvekugadzira zvakanangana nePTFE.

7) Kugona kweHighleap's Rogers AD300 PCB

Highleap Electronics inogadzira ma Rogers AD300 PCBs ane PTFE-specific process controls: plasma desmear ye through metallization, impedance-controlled etching yakasimbiswa neTDR coupon measurement, uye copper foil selection inoenderana nezvinodiwa ne PIM ye design.

• Zvinhu zvakachengetwa: AD300D ine ED yakajairwa, reverse-treated (S1), uye IM Series copper foil
• Impedance control: ±5% inodzorwa impedance ine TDR certification pane yega yega yekugadzira panel
• Rudzi rwezvikamu: Yakasanganiswa ine mativi maviri kuburikidza ne multilayer hybrid (AD300D outer layers ine zvinhu zvemukati zvinoenderana)
• Assembly: Musangano weSMT wakabatanidzwa une mapurofayiri eRF-specific reflow uye connectization

Kune mapurojekiti ekugadzira PCB paAD300D, tumira mafaira eGerber, specification yestackup, impedance targets, uye zvinodiwa ne copper foil. Chikwata chedu cheinjiniya chinopa ongororo yeDFM usati waburitsa kugadzirwa kuti chisimbise kuti trace geometry, kuburikidza nechimiro, uye specification ye copper zvinoenderana nePIM yakatarwa uye mashandiro emagetsi.

Kuti uwane ruzivo rwakakura pamusoro peRF uye microwave PCB zvinhu uye kugadziriswa, ona ruzivo rwedu rwakatsaurirwa pamusoro pekusarudza PCB laminate zvinhu . Peji redu rebasa rekugadzira PCB rine huwandu hwakazara hwezvinhu uye kugona kwekugadzirisa.

Kumbira Mutengo weRogers AD300 PCB

Mibvunzo Inonyanya Kubvunzwa

Musiyano uripo pakati peRogers AD300C neAD300D ndeupi?

AD300C neAD300D zvakasiyana muhuwandu hwe dielectric husingachinji uye ukobvu huripo. AD300D ndiyo standard yekugadzira iripo ine Drk ye2.94 ± 0.05 pa10 GHz. AD300A imhando yechipiri yekugadzirwa yakasiyana neAD300C muDf, CTE, uye TCDk values. Kune magadzirirwo matsva, taura AD300D. AD300C inguva yekare uye inofanira kungotsanangurwa chete kana ichichengetedza kuenderana kwemashure nedhizaini iripo.

Ndeipi kukosha kweDk kwandinofanira kushandisa pakuverenga impedance paRogers AD300D?

Shandisa dhizaini yeDk ye2.94 pa10 GHz yekuenzanisa impedance. Cherechedza kuti Dk haisi static — inochinja zvishoma nefrequency uye tembiricha. Rogers anokurudzira kusimbisa impedance pamabhodhi eprototype usati wazvipira kugadzira. Kune madhizaini emicrostrip, Dk inoshanda ichave yakaderera pane Dk yezvinhu zvakawanda nekuda kwenzvimbo yemhepo iri pamusoro petrace; shandisa EM simulator's material model yako pane kushandisa Dk yakawanda zvakananga.

Kusarudzwa kwefoil yemhangura kunokanganisa sei mashandiro ePIM paRogers AD300 PCB?

Kusarudzwa kwefoiri yemhangura ndiyo inonyanya kushandiswa pakuita kwePIM. Mhangura yeED yakagadziriswa nereverse (S1 foil) ndiyo chiyero chezviverengero zvePIM zvakaburitswa naRogers zve -165 dBc. Mhangura yeED yakajairika inowanzo buritsa PIM yakakwira zvakanyanya. Foiri yeIM Series inopa simba rakawanda rekubvisa mapeel asi inoshanda zvakafanana nePIM neS1. Kana dhizaini yako iine PIM specification, gara uchitsanangura S1 (yakagadziriswa nereverse) foiri zvakajeka muzvinyorwa zvako zvekugadzira.

Ko Rogers AD300D inogona kushandiswa mu multilayer stackups here?

Ehe. AD300D inogona kushandiswa muzvivakwa zve multilayer, kazhinji sezvikamu zvekunze mu hybrid stackups. Nekuti ichinhu chakavakirwa paPTFE, kubatana pakati peAD300D nedzimwe laminates kunoda zvinhu zvinoenderana zve bonding zvakasimbiswa kuti PTFE-to-substrate inamatire. Z-axis CTE ye98 ppm/°C inofanira kuverengerwa mukuverenga kwekuvimbika kwe plated through-hole kana AD300D ichishandiswa muzvivakwa zve multilayer gobvu zvine huremu hwakawanda hwemhangura.

Ko Rogers AD300D inoenderana here nekugadzira isina mutobvu?

Ehe. AD300D ine tembiricha yekuora (Td) inodarika 500°C uye yakayerwa neUL 94 V-0, zvichiita kuti ienderane nemaprofiles akajairwa e solder asina lead (kazhinji tembiricha yepamusoro ye260°C). PTFE base yechinhu ichi ine coefficient yakaderera yekukweshana uye inoda matanho akajairwa ekubata PTFE panguva yekuunganidza (kubata kwakachena kudzivirira kusvibiswa kwepamusoro kunogona kukanganisa kugona kwekugocha).